I think I can also claim some knowledge of the chaos a crashing bike and debris can cause.
I feel that your responses have gone slightly off what I was trying to highlight. I'm saying that the TT fans need to be made aware of spectator limitations sooner rather than later. Because like it or not, people may well decide not to bother if they can't see anything. It smatters to me of a "Let's break it to them gently but when we're ready" attitude. There are too many secrets behind the scenes these days, and that's the way it's going to continue to be.
There are many places you wouldn't want to watch at for obvious reasons. I watched almost every practice and race from Signpost and Bedstead since 1969, until I got involved myself, and saw most of the incidents on that part of the course. Almost all the crashes at Bedstead were caused by going in too hot, running out of road and colliding with the bank on the exit. For that reason spectators very rarely attempted to watch there, and the few that did were advised by the marshals to move down the road towards The Nook. No problem.
But I also saw the likes of Alex George, Tom Herron, Mick Grant, George Fogarty, Cap Davies and many others lose it at Signpost, and I agree that sitting on the bank on the immediate exit of the corner was unwise. But to make the whole length of the road down towards Bedstead out of bounds to fans to watch is totally over the top. There was NEVER any incident that would have endangered spectators sitting in that area during my lifetime, or having spoken to people a lot older than me, ever before that either, which would have been deemed to be high risk to spectators. Totally over-the-top reaction by those in authority.
So there is really nowhere safe to watch from these days? Better to ban all spectators from anywhere around the circuit, and all other road races too surely?